1c551e22cf
Tree comparators never change parameters, make them all const and also change the rb-tree prototypes. Signed-off-by: David Sterba <dsterba@suse.com>
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/*
|
|
* Copyright (C) 2014 Facebook. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public
|
|
* License v2 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public
|
|
* License along with this program; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 021110-1307, USA.
|
|
*/
|
|
|
|
#ifndef __RBTREE_UTILS__
|
|
#define __RBTREE_UTILS__
|
|
|
|
struct rb_node;
|
|
struct rb_root;
|
|
|
|
/* The common insert/search/free functions */
|
|
typedef int (*rb_compare_nodes)(const struct rb_node *node1, const struct rb_node *node2);
|
|
typedef int (*rb_compare_keys)(const struct rb_node *node, const void *key);
|
|
typedef void (*rb_free_node)(struct rb_node *node);
|
|
|
|
int rb_insert(struct rb_root *root, struct rb_node *node, rb_compare_nodes comp);
|
|
/*
|
|
* In some cases, we need return the next node if we don't find the node we
|
|
* specify. At this time, we can use next_ret.
|
|
*/
|
|
struct rb_node *rb_search(struct rb_root *root, const void *key, rb_compare_keys comp,
|
|
struct rb_node **next_ret);
|
|
void rb_free_nodes(struct rb_root *root, rb_free_node free_node);
|
|
|
|
#define FREE_RB_BASED_TREE(name, free_func) \
|
|
static void free_##name##_tree(struct rb_root *root) \
|
|
{ \
|
|
rb_free_nodes(root, free_func); \
|
|
}
|
|
|
|
#endif
|